Rockhopper Commits $44 Million to Secure 35% Stake in Second Sea Lion FPSO OSX-1
Rockhopper Exploration, a UK-based oil and gas exploration and production company, has earmarked USD 44 million from its existing cash reserves to obtain a 35% interest in a second floating production, storage and offloading (FPSO) vessel planned for deployment at an oil project in the North Falkland Basin.
Funding secured from existing cash reserves
The company confirmed it has entered into an agreement to acquire its 35% pro rata participating interest in the FPSO OSX-1, a move it says brings the basin one step closer to unlocking its long-awaited offshore potential.
Under the terms of the agreement, Rockhopper will subscribe for USD 44 million of ordinary shares in a newly incorporated special purpose vehicle (SPV) that owns the unit. The company stressed that the subscription will be funded entirely from its existing cash resources. The amount reflects Rockhopper's 35% share of the previously disclosed aggregate acquisition cost of the FPSO, estimated at approximately USD 125 million.
Structure of the special purpose vehicle
The SPV is a newly incorporated private company whose sole asset is the OSX-1 FPSO, and it has no material trading history or other business activities, according to Rockhopper.
The company also disclosed the ongoing financial commitment attached to the stake, stating: "Rockhopper is expected to incur net holding costs, attributable to Rockhopper's 35 per cent pro rata participating interest, of approximately USD 1.4 million per annum."
Background of the FPSO acquisition
The acquisition of the FPSO OSX-1 was announced in August 2026, a move that secured the second unit for use in the accelerated development of the Central Development Area at the Sea Lion oil project, which is operated by Navitas Petroleum. The vessel is intended to support the second stage of development at the project, complementing the infrastructure already planned for the initial phases.
Project timeline and production capacity
The first two development phases of the Sea Lion project are expected to use the FPSO Aoka Mizu, which will have a production capacity of 55,000 barrels of oil per day. Based on the existing schedule, drilling works are slated to begin in early 2027, with first oil from Phase 1 slated for the first half of 2028.
The FPSO OSX-1 will increase production capacity by a further 125,000 barrels of oil per day.
Following a final investment decision (FID), the project's post-FID funding requirement is USD 1.8 billion through to first oil, while the total requirement to project completion is estimated at USD 2.1 billion.
Geopolitical context surrounding the development
The confirmation of Rockhopper's investment comes shortly after Navitas shed light on Sea Lion contractor replacements and ongoing Falklands oil development progress following Argentine sanction threats. These threats were illustrated in a recent speech delivered by Javier Milei, President of Argentina.
Despite the political tensions surrounding oil activities in the Falkland Islands, the project's development schedule and funding arrangements have continued to advance, with Rockhopper now formally committing its share of the second FPSO's acquisition cost.